Description
96–99 GM 3100 Injector Harness
Reliable fuel injector wiring for GM 3100 and 3.1 engine builds.
The 1996–1999 GM 3100 Injector Harness is a direct factory-style replacement designed for 1996–1999 GM 3100 engines, providing a clean, dependable solution for stock replacements, engine swaps, and simplified wiring setups.
This harness is built for builders who want reliable injector connections without complicated wiring, making it a great option for demolition derby builds, engine swaps, or simplified ECM wiring systems.
In addition to direct 96–99 3100 applications, this harness is also fully compatible with 1989–1994 3.1 flat-top engines, making it an excellent upgrade for older setups being converted to run with a tuned ECM and simplified wiring harness.
It can also be used on 1995 GM 3100 engines, allowing builders to transition into a cleaner, simplified ECM wiring system for easier installation and improved reliability.
Key Benefits
1. Direct Replacement for 1996–1999 GM 3100 Injector Harness
Factory-style fitment designed specifically for 96–99 GM 3100 engines.
2. Compatible with 1989–1994 3.1 Flat-Top Engines
Perfect for upgrading older 3.1 setups to run modern simplified wiring and ECM systems.
3. Works with 1995 GM 3100 Engines
Allows 1995 engines to convert to a simplified ECM wiring setup for cleaner installations.
4. Ideal for Tuned ECM Applications
Designed to work seamlessly with tuned ECM systems and simplified engine harness builds.
5. Perfect for Swaps and Derby Builds
A reliable solution for engine swaps, derby cars, and simplified wiring systems where durability and easy installation matter.
Built for Simple, Reliable Wiring
Whether you’re replacing a worn factory harness, building a fresh GM 3100 setup, or converting an older 3.1 platform to a simplified ECM system, this injector harness provides a clean, dependable wiring solution that keeps your engine running strong.
Pro Tip: Pair this harness with IndyCNC W-Body risers and a shifter for a solid derby setup.
Be sure to check out our full selection of ignition and ECM components in the ECM / Ignition category at DerbyParts.com.
